Texas Instruments ISOUSB211 High/Full/Low Speed USB Repeater

Texas Instruments ISOUSB211 High/Full/Low Speed Isolated USB Repeater is galvanically-isolated and USB 2.0 compliant with low speed (1.5Mbps), full speed (12Mbps), and high speed (480Mbps) signaling rates. The ISOUSB211 features automatic connect and speed detection, a reflection of pull-ups/pull-downs, and link power management, allowing drop-in USB hub, host, peripheral, and cable isolation. Furthermore, the device supports automatic role reversal - if a new connect is detected on the Upstream facing port after disconnect, then the Upstream and Downstream port definitions are reversed. This feature allows the ISOUSB211 to support USB On-The-Go (OTG) and Type-C Dual Role Port (DRP) implementations.

The TI ISOUSB211 repeater offers inbuilt programmable equalization to cancel signal loss caused by board traces, which helps meet USB 2.0 high-speed TX and RX eye-diagram templates. This device utilizes a silicon dioxide (SiO₂) insulation barrier with a withstand voltage of up to 5000V_RMS and a working voltage of 1500V_RMS. The device protects against high voltage and prevents noise currents from the bus from entering the local ground when used in conjunction with isolated power supplies.

The ISOUSB211 is engineered for basic and reinforced isolation. The device supports a wide ambient temperature range of -40°C to +125°C and is housed in the small footprint SSOP-28 (28-DP) package.

Features

Compliant with USB 2.0
Supports low-speed (1.5Mbps), full-speed (12Mbps), and high-speed (480Mbps) signaling
Does not need an external crystal or clock input
Automatic speed and connection detection
Supports L1 (sleep) and L2 (suspend) low-power states
Programmable equalization to compensate board trace loss in high-speed mode
CDP advertising on the downstream side
Supply OK indication on the opposite side
Supports automatic role reversal for USB On-The-Go (OTG) and Type-C^® Dual Role Port (DRP) designs
100kV/µs High CMTI

±8kV IEC 61000-4-2 contact discharge protection across an isolation barrier
4.25V to 5.5V VBUS voltage range
3.3V and 1.8V internal LDOs
Meets CISPR32 class B emissions limits
-40°C to +125°C Ambient temperature range
Small footprint 28-SSOP package
Safety-related certifications:
- 7071VPK V_IOTM and 2121V_PK V_IORM (Reinforced and Basic Options) per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000V_RMS isolation for 1 minute per UL 1577
- IEC 62368-1, IEC 60601-1, and IEC 61010-1 certification
- CQC, TUV, and CSA certifications